Home / 11,303.40-17,019.75-10,612.20

Finding the Fourth Proportional to 11,303.40, 17,019.75 and 10,612.20

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Solution

The fourth proportional to 11,303.40, 17,019.75 and 10,612.20 is: 15,979.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,303.40 : 17,019.75 = 10,612.20 : x
  2. Step 2: Convert to fraction form
    11,303.40/17,019.75 = 10,612.20/x
  3. Step 3: Cross multiply
    11,303.40x = 17,019.75 × 10,612.20
  4. Step 4: Simplify right side
    11,303.40x = 180,616,990.95
  5. Step 5: Solve for x
    x = 180,616,990.95/11,303.40
  6. Step 6: Final answer
    x = 15,979.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.